<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width,initial-scale=1.0">
        <title>注册页面</title>

    </head>
    <body>
        <form action=""method="get">
            <input name="phone" type="tel"
            pattern="^1[3-9]\d{9}$"
            autocomplete="off" autofocus placeholder="请输入手机号">
            
            <button type="submit">注册</button>
        </form>
    </body>
</html>